Liquid feeding mechanism for combustion chambers



M y 1, 1951 R. D DDDDARD 2,551 113 LIQUID FEEDING MECHANISM FOR COMBUSTION CHAMBERS Filed Feb. '7, 1948 INVENTOR.

z ddazd 12 d. fiat di 22d,

BY a a 7 e:

6 ATTORNEYS.

Patented May 1, 1951 1 a LIQUID FEEDING MECHANISM FOR COMBUSTION CHAMBERS Robert H. Goddard, deceased, late of Annapolis, I Md., by Esther C. Goddard, executrix, Worcester, Mass., assignor of one-halite The Daniel and Florence Guggenheim Foundation, .New York, N. Y., a corporation of New York Application February 7, 1948, Serial No. 7,018

1 Claim.

This invention relates to combustion chambers adapted for use in rockets and other propulsion apparatus.

It is the general object of the present invenments in parallel and adjacent conical sheets or surfaces which present a most favorable opportunity for further and very efiective intermingling.

tion to provide improved constructions by which 5 In Figs. 3 and 4, the invention is shown as antwo combustion liquids may be fed to a combusplied. to a rotating combustion chamber 0 havtion chamber in intersecting sprays and also in ing opposed conical wall portions 30 and 3| and parallel adjacent sheets, so that very effective opposed conical casing members 33 and 34 enintermingling of the combustion liquids will take closing jacket spaces S and S. These jacket place. 0 spaces are closed at their outer ends, as shown The invention further relates to arrangements at 35 and 36, and are provided with spray openand combinations of parts which will be hereings 31 and 38 which are preferably arranged as inafter described and more particularly pointed spaced rings of elongated slots. out in the appended claim. An annular tubular member 40 (Fig. 4) is Preferred forms of the invention are shown connected by a series of feed pipes 4| to the in the drawing, in which jacket space S through the casing member 34,

Fig. 1 is a partial sectional elevation of a comand a second annular member 44 is similarly conbustion chamber, with one form of the invennected by pipes 45 to the jacket space S through tion embodied therein; the casing member 33.

Fig. 2 is a partial perspective view of an an- Annular baffle plates 1 m y be provided nular feeding member; fill in the spaces between the tubular members Fig. 3 is a partial sectional elevation showing 40 and 44 and also between said members and the invention applied to a rotating combustion the end walls 35 and 36 of the jacket spaces S chamber; 7 and S;

Fig. 4 is a partial perspective view of the struche tu u member 40 as O Sets Of Sp ture shown in Fig. 3; and. openings 50 and 5|, and the tubular member 44 Figs. 5 and 6 are detail sectional views show- 1 has a single set of spray openings 52. One coming additional or modified structure. bustion liquid, as gasoline, is supplied under Referring to Figs. 1 and 2, the closed end porpressure through the jacket space S to the series tion of a combustion chamber C is provided with of slots 31 and also through the pipes 45 and an axial feeding member III and an annular the annular member 44 to the series of slots feeding member H. The member 80 is provid- 52, thus providing two sets of gasoline sprays ed with a series of slots 54 which are directed g and y. outward or away from the axis, and the mem- Liquid oxygen under pressure is supplied ber H is provided with a series of slots 16 which through the jacket space S to one series of are directed inward or across the axis. spray openings 38 and also through the pipes Liquid oxygen under pressure may be supplied 4| and the annular member to the two series to the member Ill through a feed pipe 2!], and of spray openings 50 and 5!, thus providing three liquid fuel, as gasoline, may be supplied under sets of oxygen sprays 0:. pressure to the member ll through a feed pipe 2|. 40 With this arrangement, the sprays of each With this construction, streams or sprays a liquid will intersect sprays of the other liquid of liquid oxygen will first intersect correspondclosely adjacent t p y pe and ll ing streams b of gasoline, and will then consprays will continue their travel in closely adtinue their movement to form a conical sheet jacent parallel sheets of contrasting liquids. of liquid oxygen concentric with and adjacent A rotatin combustion chamber of this general to a similar conical sheet of gasoline. This 2.0- type is shown in the prior Goddard application complishes two very desirable results. Ser. #507,416, filed October 23, 1943, now Patent In the first place, the sprays of different liq- No. 2,479,829. uids intersect and impinge closely adjacent the As shown in Fig. 4, the gasoline sprays y will admission slots 14 and H5 and before the liqextend parallel to and adjacent one set of oxygen vuids have had a chance to separate into drops. sprays as, and the gasoline sprays y will extend Such drops, if formed, may easily pass each other parallel, adjacent and between two sets of oxywithout impinging or intermingling. gen sprays :c. Very efiective intermingling of the In the second place, the sprays, after passing combustion liquids is thus accomplished. the area of intersection, continue their move- 55 The sprays may be broken up into eddies for more effective intermingling on impact by providing a fine coil of wire 60 (Fig. 5) just inside of the spray openings or slots 6| in a feeding member 62, or by providing a strip of very fine wire cloth 10 just inside the spray openings H in a feeding member 12, as shown in Fig. 6. It will be understood that the coil 60 or wire cloth 10 may be used. in connection with any of the feeding slots or openings previously descnihed.

With either of the described constructions, most effective intermingling of two combustion liquids is very satisfactorily accomplished.

Having thus described the invention and the advantages thereof, it will be understood that the invention is not to be limited to the details herein disclosed, otherwise than as set forth in the claim, but what is claimed is:

A combustion chamber having jacketed wall portions spaced apart at their closed inner ends and adapted to contain liquids under pressure, a pair of parallel annular spray pipes mounted between said closed ends, and tubular means to connect each wall portion at its closed end with the more remote spray pipe, said closed ends and spray pipes having five sets of spray openings through which jets of liquid are ejected, the sets ofspray "openings in the closed-ends of 'the'spaced wall portions being directed at oppositely-inclined angles so that the two series of jets delivered from said openings converge relative to the axis of said chamber and to each other, each annular supply p'ipehaving one set of spray openings directed substantially parallel to the jets delivered from the spray openings in its adjacent wall portion, and one annular supply pipe having an additional set of spray openings which are oppositely inclined with respect to its first set of spray openings therein, whereby jets ejected from each set of spray opening-s 'cross jets from a second set of spray'openings-and continue substantially parallel tojets froma third set of spray openings.

' ESTHER C. GODDARD, Executria: of the Last Will and Testament of Robert H. Goddard, Deceased.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,795,314 Phillips Mar. 10, 1931 2,405,465 Summerfield Aug. 6, 1946 2,409,036 Goddard Oct. 8, 1946 

